ColorChecker function does not work?
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I am trying to follow the example here:
I use this code:
cfa = rawread("DSC_0136.NEF");
J = demosaic(cfa,"rggb");
A_sRGB = lin2rgb(J);
montage({J,A_sRGB})
title("Original Image Before and After Gamma Correction")
chart_sRGB = colorChecker(A_sRGB);
% chart_sRGB = colorChecker(rgb, sensitivity=0);
DisplayChart(chart_sRGB)
But I keep running into this error:
Error using colorChecker
Color patches were not detected. Try adjusting the Sensitivity parameter or turning off the Downsample parameter.
This is my test NEF:
Why is the functioon failing?
I tried varying the sensitivity from 0 to 1 and turning downsampling off to no avail.
Is the function not designed to operate on a picture of the chart that's full-frame?
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